> This is relatively straightforward to solve. You take the existing CA gas tax and have it increase a couple of pennies every single month indefinitely. Gasol

> This is relatively straightforward to solve. You take the existing CA gas tax and have it increase a couple of pennies every single month indefinitely. Gasoline in California is still about 1/2 the price in Europe. A tax on gas doesn't solve the surrounding geography. Emissions in LA have plummeted since the 1970s, but while air quality has improved in that time, it has not improved as fast as the drop in emissions would predict based on other cities. That's because of the surrounding geography - air pollution gets trapped there and doesn't clear out as easily.